Cobra® Fascia Vent

Effective attic ventilation is critical for a long-lasting roof!
A properly balanced attic ventilation system will help to:

Remove excess heat and moisture to help protect
your roof from premature deterioration

Prevent roof rot in your attic or roof deck

Minimize peeling and extend the life of
exterior and interior paint

Limit the growth of harmful mold

Safeguard your attic possessions against
mildew damage

Guard against ice damming in harsh winter
climates

Promotes energy efficiency by reducing excessive heat in your attic

Cobra® Fascia Vent is a key part of the GAF Lifetime Roofing System,
and has even
earned the prestigious Good Housekeeping Seal.
(See Details)
* The GAF Lifetime Roofing System has earned the prestigious Good Housekeeping Seal, which means that Good
Housekeeping stands behind the products in this system. (Refer to Good Housekeeping Magazine for its consumer
protection policy. Applicable in U.S. only.)

Homeowner’s Best Choice

Great Solution…
Provides excellent air intake in homes without soffits

Safeguards Possessions…
Reduces condensation which can lead to mold growth by allowing cooler air to enter through fascia,
forcing heat out at the roof’s exhaust vents

Looks Terrific…
Virtually hidden at the bottom of your home’s fascia for a clean and finished look

Protects Your Home…
Helps to prevent wood rot and extend the life of your exterior paint

Peace of Mind…
Up to a Lifetime ltd. warranty when installed on Lifetime Shingle roofs
(See Details)
See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions. The word “Lifetime” refers to the
length of coverage provided by the GAF Shingle & Accessory Ltd. Warranty and means as long as the original individual
owner(s) of a single-family detached residence [or the second owner(s) in certain circumstances] owns the property
where the shingles are installed. For owners/structures not meeting the above criteria, Lifetime coverage is not applicable.

Calculate the total square footage of the attic floor area (round up to the next
highest number). This number will determine the minimum total linear feet of Cobra®
Fascia Vent that is needed.

Find the appropriate amount of Cobra® Fascia Vent and minimum exhaust
ventilation that corresponds to the total attic square footage.

How Much Do I Need? (Based on 1/300 Rule)

Total Attic
Square Footage

Recommended Length of
Cobra® Fascia Vent (Feet)*

Minimum Exhaust Ventilation
(Net Free Area in Sq. In.)

1600

35/24

384

1900

42/29

456

2200

48/33

528

2500

55/38

600

2800

61/42

672

3100

68/47

744

3400

74/51

816

* First figure pertains to 1" width. Second figure pertains to 1.5" width.NOTE: Always have a balanced ventilation system. In no case should
the amount of exhaust ventilation at the ridge exceed the amount of soffit ventilation.

A Lifetime ltd. warranty... on your shingles and all qualifying GAF accessories!
(See Details)
See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions. The word “Lifetime” refers to the
length of coverage provided by the GAF Shingle & Accessory Ltd. Warranty and means as long as the original individual
owner(s) of a single-family detached residence [or the second owner(s) in certain circumstances] owns the property where
the shingles and accessories are installed. For owners/structures not meeting the above criteria, Lifetime coverage is not
applicable. Lifetime Ltd. Warranty on accessories requires the use of at least three qualifying GAF accessories and the
use of Lifetime Shingles.